Other forms: fifteens
Fifteen is the number after fourteen. Three fives, and a quarter of sixty.
Because sixty divides so neatly, fifteen minutes became the quarter hour and the natural unit of a timetable. Rugby union has fifteen players a side, which is why the sport is sometimes called fifteens to distinguish it from rugby league's thirteen. Tennis scores in fifteens for reasons nobody has satisfactorily explained, though a clock face is the usual theory.
1nounfifteenThe number after fourteen.
“The bus takes about fifteen minutes.”
Proto-Indo-European
*pénkʷe
Middle English
fiftene
English, today
fifteen
From Middle English fiftene. From Middle English fiftene, from Old English fīftīene, fīftēne, from Proto-Germanic fimftehun. Cognate with West Frisian fyftjin, Dutch vijftien, German fünfzehn, Danish femten. Equivalent to five + -teen.
Etymology from Wiktionary, CC BY-SA